Ex disfellowshipped 35 year old Phillip F. used a liscensed hand gun for the murders.
According to F., he grew up in a strictly evangelical household in Kempten in the Allgäu.
No excuse, but I think the Watchtower is also culpable.
https://philippfusz.com/about-me/
https://www.dailystar.co.uk/news/latest-news/breaking-hamburg-gunman-who-shot-2942214
Guy has a book out.
https://www.amazon.com.au/Truth-About-Jesus-Christ-Satan/dp/1915852889/ref=tmm_pap_swatch_0?_encoding=UTF8&qid=1675249265&sr=8-19